Professional sharpening stone for commercial or occasional use 6" / 150mm diamond sharpening stone Quick easy and effortless sharpening No oil lubrication needed, only requires water Suitable for planes, chisels, routers, blades etc... Quick easy and effortless sharpening Extremely durable Fine grade used to refine the cutting edge of plane irons, chisels and can be used to hone TCT router cutters Total length 6" (150mm)